On Fri, Mar 15, 2013 at 1:50 AM, Kirill A. Shutemov
<kirill.shutemov@xxxxxxxxxxxxxxx> wrote:
> + page_cache_get(page);
> + spin_lock_irq(&mapping->tree_lock);
> + page->mapping = mapping;
> + page->index = offset;
> + error = radix_tree_insert(&mapping->page_tree, offset, page);
> + if (unlikely(error))
> + goto err;
> + if (PageTransHuge(page)) {
> + int i;
> + for (i = 1; i < HPAGE_CACHE_NR; i++) {
struct page *tail = page + i; to easy reader
> + page_cache_get(page + i);
s/page_cache_get/get_page_foll/ ?
> + page[i].index = offset + i;
> + error = radix_tree_insert(&mapping->page_tree,
> + offset + i, page + i);
> + if (error) {
> + page_cache_release(page + i);
> + break;
> + }
> }
> - radix_tree_preload_end();
> - } else
> - mem_cgroup_uncharge_cache_page(page);
> -out:
> + if (error) {
> + error = ENOSPC; /* no space for a huge page */
s/E/-E/
> + for (i--; i > 0; i--) {
> + radix_tree_delete(&mapping->page_tree,
> + offset + i);
> + page_cache_release(page + i);
> + }
> + radix_tree_delete(&mapping->page_tree, offset);
> + goto err;
> + }
> + }
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